Hellfire

Hellfire is a member of Nick Fury's covert team of young Caterpillar agents in the Secret Warriors series, recruited and trained as a shadowy operative during one of Marvel's most turbulent periods of conflict and espionage.

Hellfire burst onto the Marvel scene in 2008, introduced by the acclaimed team of Brian Michael Bendis and Stefano Caselli in The Mighty Avengers #18 — a Modern Age debut that landed right in the thick of one of Marvel's most turbulent eras. This is a character whose story unfolded primarily across the pages of Secret Warriors, that gripping series where shadowy operatives and dangerous secrets collide, alongside compelling company like Nick Fury, Quake, and Stonewall. With a key-issue appearance to their name and a presence that extended through major events like Siege and the New Avengers Finale, Hellfire may have a compact footprint in the catalog, but it's a footprint that lands in some genuinely consequential Marvel real estate — well worth hunting down for any fan of the covert, high-stakes corner of the Marvel Universe.